The Dodge Challenger SRT Hellcat is known for its insanely powerful supercharged 6.2L HEMI V8 engine. Since its introduction in 2015, Dodge has continued to push the limits of the Hellcat’s power output. But which Hellcat variation currently offers the most horsepower?
Hellcat Engine Options
Here’s a quick overview of the different Hellcat engines Dodge has offered over the years:
- 6.2L Supercharged HEMI V8 (2015-2017): 707 hp, 650 lb-ft torque
- 6.2L Supercharged HEMI V8 (2018-2020): 717 hp, 656 lb-ft torque
- 6.2L Supercharged HEMI V8 “Hellephant” crate engine (2019): 1,000 hp, 950 lb-ft torque
- 6.2L Supercharged HEMI V8 “Redeye” (2019-2021): 797 hp, 707 lb-ft torque
- 6.2L Supercharged HEMI V8 (2021-present): 717 hp, 656 lb-ft torque
Based solely on factory ratings, the current most powerful Hellcat is the Challenger SRT Super Stock with 807 hp. However, Dodge also offers the “Hellephant” crate engine which boasts an insane 1,000 hp.
The Hellcat Redeye
In 2019, Dodge introduced the Challenger SRT Hellcat Redeye. This amped up version of the Hellcat pumped out 797 hp and 707 lb-ft of torque. The Redeye uses a revised version of the Hellcat’s 6.2L supercharged V8, featuring:
- Larger 2.7L supercharger
- Upgraded fuel injection system
- Stronger crankshaft
- Reinforced connecting rods
- High-speed valve train
These upgrades allow the Redeye’s engine to handle 14.5 psi of boost pressure. The Redeye can rocket from 0-60 mph in just 3.4 seconds and hit a top speed of 203 mph.
The Hellephant Crate Engine
In a class all its own is the Hellephant 426 Supercharged Mopar Crate HEMI engine. Announced by Dodge in 2018, this complete plug-and-play powerplant was designed for custom car builds and delivers a staggering 1,000 hp and 950 lb-ft torque.
The Hellephant is based on the Hellcat engine but turned up to the extreme. Highlights include:
- 4.0L twin-screw supercharger
- High-flow cylinder heads
- Forged steel crankshaft
- High-strength forged pistons
- Custom camshaft
While intended for installation in custom vehicles, the Hellephant engine provides an idea of how far Dodge has pushed the Hellcat platform. No factory Hellcat can match the Hellephant’s power.
The Challenger SRT Super Stock
For the 2021 model year, Dodge added the new Challenger SRT Super Stock variant. Rated at 807 hp and 707 lb-ft torque, the Super Stock ranks as the most powerful production Hellcat ever sold by Dodge.
The Super Stock uses the Redeye’s engine but with a high-output supercharger. Additional mods include:
- Lightweight wheels
- Adjustable suspension
- Sticky road tires
- Launch assist
- Line lock
These specializations make the Super Stock built for drag racing. It can sprint from 0-60 mph in just 3.25 seconds. The 1/4 mile passes in 10.5 seconds at speeds over 131 mph.
Highest HP Hellcat Specs Comparison
Here is a specs comparison of the most powerful Hellcat models:
| Model | HP | Torque | 0-60 mph | Top Speed |
|---|---|---|---|---|
| Challenger SRT Hellcat (2015-2017) | 707 hp | 650 lb-ft | 3.6 seconds | 199 mph |
| Challenger SRT Hellcat (2018-2020) | 717 hp | 656 lb-ft | 3.4 seconds | 203 mph |
| Challenger SRT Hellcat Redeye (2019-2021) | 797 hp | 707 lb-ft | 3.4 seconds | 203 mph |
| Challenger SRT Super Stock (2021) | 807 hp | 707 lb-ft | 3.25 seconds | 168 mph |
Conclusion
While the “Hellephant” crate engine boasts an insane 1,000 hp, the most powerful production Hellcat built by Dodge is the 2021 Challenger SRT Super Stock. With 807 hp on tap, it edges out the Hellcat Redeye for the highest factory horsepower rating.
However, all Hellcat models deliver incredible performance with their supercharged 6.2L V8 engines. Horsepower ranges from 707 hp in early Hellcats up to 807 hp in the Super Stock. This makes the Hellcat platform one of the most powerful muscle cars ever put into production.
Dodge continues to push the limits of the Hellcat V8. More power increases and special editions likely await in the future. But for now the Challenger Super Stock reigns supreme as the highest HP Hellcat from the factory.